基本解釋[經(jīng)濟(jì)學(xué)]頂板錨栓鉆機(jī)詞組短語(yǔ)短語(yǔ)roof -bolt t drill 頂板錨栓鉆機(jī)roof-bolt drill更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)頂板錨栓鉆機(jī)